Inlay vulcanizer and press



April 14, 1925. J. H. WILLIAMS INLAY vULcANIzER AND PRESS Filed sebi. 1, 192:5

2 Sheets-Sheet 1 INVENTOR @du .L LA@ o April 14, i925.

1,533,625 J. H. WILLIAMS INLAY VULCANIZER ND PRESS Filed Sept. J, 1925 2 Sheets-Sheet 2 660%;10 IN'VENTOR @fum x.

Patented Apr. ll, i925..

UNITED stares resaca JOI-IN HOD .VILLIAMS, `03:1 WES'J." PALM BEACH, FLOR-IDA.

INLAY VULCANIZER` AND PRESS.

Application filed September 1, 1923. Serial No. 660,460.

To @ZZ whom t may concern.' f

Be it known that I, JOHN Hon WILLiAMs, a citizen of the United States, and a resident of Test Palm Beach, in the county of Palm Beach and State of Florida, have invente/tV certain new and useful Improvements in Inlay Vulcanizers and Presses, of which the following is a specification.

This invention relates to improvements in vulcanizers and particularly to types combined with a press, as used in connection with flasks containing` molds formed of plaster, as in dental inlay and other work requiring a high degree of accuracy and refinement.

One of the objects of the invention is to provide a structure that can be used in vulcanizing rubber and analogous substances and also, without change, operate equally well on firmer material, such as the pyroX- ylin group, including Celluloid, etc., Vand also resinous groups such as phenolic condensation products, preferably in the forni of round rods, whereby an extremely light, strong plate maybe obtained, tasteless, odorless, colored to suit and free from the objectional features of common plates made of metal and other material, in the ordinary manner.

Another purpose is to produce an appara.- tus in which the material in round rods is pressed directly linto the flask when closed and within the vulcanizer, the material being softened and rendered pliable within the structure and forced directly into the mold under suchpressure as may be required, all elements being component parts of the vulcanizer.

A further aim is in the provision of a portable apparatus containing` a steam generating chamber, heated by any convenient means and so arranged that the press elements may be removed and their chamber capped by a removable plug.

rlhese several aims, objects and purposes, together with others which will become ap-` parent as the description progresses, are accomplished by the novel design, construction and combination of parts, hereinafter described and. shown in the accompanying drawings, forminga material part of this disclosure and in which y Figure l, is a longitudinal sectional view taken through the center of an embodiment of the invention,

" Figure Qis a top plan view of the same.

Figure 3 is a transverse sectional view taken on line 3 8 of Fig. l, showing the top of the vulcanizer body.

Figure 4lis a. bottom plan view of the removable upper portion of the vulcanizer, looking on line 4-4 of Fig. 1.

Figure 5 is a perspective view of the flask. `Figure 6 isa partial Vertical sectional view, similar to Fig. l, but showing a modification.

Figure 7 is a sectional view of the flask, illustrating; the making of a mold therein.

Figure 8 is a similar view showing the 'cast as made.

Figure 9 is an enlarged fragmentary longitudinal sectional view takenthrough the upper part of the vulcanizer chamber, showing the press elements removed and a plug `cap substituted.

Stated in general terms the invention consists of a cylindrical casing, raised byv a tripod base from the surface` on which itis operated to allow the use of' any preferred heater, `as a Bunsen burner for gas heater as shown.'

therein, which acts `as a nut for the screw and also a pocket to receive the material, preferable in the form of a rod, and so arranged as to enter the opening inthe center of the flask, when rendered sufficiently plastic by heat imparted from the steam and under pressure of the screw.

Referring more in detail to the drawings, the numeral kdesignates the cylindrical casing constituting` the main body vof the apparatus, in the lower endr of which is secured a plate ringv 16,' formed with leg sup ports 17, having flanged'feet 1S provided with openings 19 to receive fastening means by which the apparatus may be secured on a bench or like foundation. v

Any preferred number of legs may `be used and their length is such. as `tojrea-olily admit of a heater, as the Bunsen burner 20, to be placed below the casing, the burner tubev 2l extending above thering as sho-Wn,

gas beingconnected to the burner by the tube 22 and controlled by the cock 23.

An opening 24 in the casing provides means for igniting` the gas in the burner end, the flame impinging upon the convex bottom of a boiler, generally designated by the numeral 25, this boiler havingatits top an annular flange 26 extending outward and resting` on a ring: 27 seated on top ot the casing l5 and having a reduced portion fitted to enter the casing and be secured therein.

The main circular portion of the boiler has on one side a heavy, inwardly eX- tending rib 2S and is formed with other equally spaced vertical ribs 29 adapted to enter openings in grates 30 and 3l, respectively lower and upper, the lower grate resting in the boiler near its curved bottom, above the normal level of the water.

These zgrates are interchangeable and in case two flasks are used, as in ordinary `vulcanizers, one grate only is used, but it the apparatus is used as a press for firmer material, the lower grate is provided with supports 32 upon which the upper grate rests, guided by the ribs as shown.

The flask is preferably composed of a cuplile base element 38, above which is a ring 3st, surmounted by a cap or cover 35, the latter having' a convex upper wall containing al central cavity 3G from which leads a central vertical opening' 37 to the interior of the flask.

Other, smaller, lateral openings 3S are formed at the junction of the ring;Y and base, partially in each, so that an excess of inaterial may escape. i

The general shape of the flask` is circular, flattened at one side, and formed to engage the ribs in the boiler, and the sections are interlocked in such manner as to prevent relative displacement, the mold being formed in the usual manne-r.

Seated on the flange 2G, which is provided with a depressed groove 39 for a paching ring, is a plate 40 having lateral extensions tl containing` notches` 42 to receive bolts 43 pivoted on pins 44 passing through ears -l5 integral withthe ring 2T and provided with nuts lG by which the plat-e l0 may be firmly clamped to the boiler flange.

Extending centrally upward from` the plate 40 is a generally conical projection t? containing a chamber 48 and having` in its lower portion an integral block i-9, there being steam passages. through it, in communication with the boiler which the plate covers.

This block is internally screw-threaded to receive the lower end 5l of a sleeve 52, the lower extremity of which is convex to suit the cavity 36 of' the flask cap.

The larger diametered, main portion of the sleeve passes through a packing ring 53 Set in a seat kin the upper part of the conc i7 and is compressed by a hollow packing screw 54, threaded into the top of the cone and through which the sleeve passes.

At the upper end of the sleeve is a head 55 suited to receive a wrench and extending from the head is a threaded thimble 56' In the modification shown in Fig. 6, a.

spring` 62 is interposed between the plunger 5S and end of the screw, this form being used when a compressible plastic isy being,r molded.

Fig. 9 shows the apparatus with the sleeve 52 and screw 60 removed, and in place of the vsleeve a solid plug 63 is inserted in t-he top of the cone.

In all cases the plate Il() is drilled and tapped, at 64, to receive a casing' 65 for the tl'iermometer G6, and it is to be noted that the thermometer is in direct communication with the interior of theboiler and thus subject to its variations of temperature.

Screw threaded into the cone 47 is a steam relief valve 67 provided with a handle G8 convenient for operation and which may be used for blowing off the boiler vwhen desired.

Figs. 7 and 8, showingsections of the flask, illustrate the manner of forming the molds, the plasterbeing represented by the teeth, T, and the plate, as cast, is shown therein.

The operation is very simple, first forniing the mold within the flask in, the usual manner, entering water into the boiler, filling a proper quantity of material into the sleeve and clamping the cone carrying cover over the boiler. I

Upon application of heat, steam is raised, circulating` about the flask and entering the cone, causing the material to become softened,whereupon pressure is applied by the screw, forcing the material into the flask in a plastic condition, causing it to flow to every part of the mold, any excess appearing at the small openings 38.

lVhen the cast is completed, the upper portion of the apparatus is unbolted and the flask removed to vbe treated in the usual manner.

Although I have described my improvements with considera-ble detail and with respect to certain particularforms ofmy inlUO vention, I do not desire to be limited to such details since many changes and modifications may well be made without departing from the spirit and scope of my invention in its broadest aspect.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

l. A vulcanizer press containing a boiler body, a flask removably engaged therein, a chambered cover clamped over said body, a sleeve adjustable in said cover to extend outward thereabove, said sleeve registering with and clamping said flask, a plunger 'movable in the sleeve, a screw operative in said sleeve adapted to press said plunger against material contained therein directly into said flask and a spring interposed between the screw and plunger.

A vulcanizer comprising an upright cylindrical casing, a boiler supported within said casing, a hea-ting means, grates removably disposed in said boiler, means for spacing said grates, in vertical relation, ribs eX- tending in from the wall of said boiler for positioning the grates, and a -co-ver over said boiler removably clamped to said casing.`

3. A vulcanizer co-mprising an upright cylindrical casing, al stand on which said casing is supported, a boiler suspended within said casing, means extending through said stand for heat-ing said boiler, said boiler having internal longitudinal ribs, one of said ribs extending inward to a greater extent than the others, grates disposed in said boiler, said grates being guided by said ribs, a flask supported on one of said grates, said flask engaging said ribs, a chambered cover gasketed to the top of said boiler, and means carried by said casing for clamping said cover thereover. j

la A vulcanizer comprising an upright cylindrical casing, a stand on which vsaid casing is supported, a boiler fixed in said casing said boilerliaving internal vertical ribs, means for heating said bo-iler, said casing having an opening for igniting the heating means, a flask suited to enter said boiler, supports for said flask engageable withsaid ribs, a domed cover having means for sealing said boiler, clamping means for said cover carried by said casing a sleeve adjustable in said cover and adapted to contact with the flask, the ropening in said flask registering with the bore of said sleeve, and means including a spring pressed plunger for forcing material from saidsleeve into the flask.

5. A combined vulcanizer and press comprising a casing, a boiler therein, means for hea-ting said boiler, a flask supported in said boiler, a cover removably secured over said boiler, said cover having a raised steam chamber, a sleeve adjustably a-ndremovably sleeve entering a. cavity in the top of said flask, a packing nut for said sleeve at the top of said chamber, and a plug interchangeable with said packing nut. i

6. A combined vulcanizer and press comprising a casing, a boiler therein, means for heating said boiler, a flask supported in said boiler, a cover removably secured over said boiler, said cover having a central raised hollow extension constituting a steam chamber and a partial web level with the lower surface of the cover, a sleeve screw threaded into said web, a packing nut in the top of said chamber through which said sleeve eX- tends, a screw operable in said sleeve, a plunger actuated by said screw within the lower part of said sleeve, said sleeve imping-4 ing on the top of said flask and carrying material to be entered therein, and means for locking said screw to said sleeve.

'l'. A vulcanizer press containing a steam chamber havinginternal longitudinal ribs, a flask removably engaged therein, said flask having a cylindrical opening in its cover a concave recess circumjacent thereto, and projections on its sides engagea-ble with said ribs, an adjustable sleeve having its lower end fitted to engage the recess in the flask cover, said sleeve being adapted to contain al cylindrical rod of the material to be molded, and means for pressing the rod when softened vinto said flask.

S. A vulcanizer press containing a ribbed steam chamber, a flask removably engaged therein, said flask having a cylindrical opening in its cover and a concave recess circumjacent thereto. means on said flask cooperative with the ribs in said chamber adapted to prevent relative rotation, an adjustable sleeve engaging the flask cover, said sleeve having a. bore exceeding the diameter of the holein said flask, the bore of the sleeve being adapted to contain a: cylindrical rod of material, and means for forcing the rod when in pliable condition into said flask.

9. A vulcanizer press containing a steam chamber, a flask removably engaged therein, said flask having a flattened side, a cylindricalopening in its cover, and spacedopenings between the lower and intermediate scctions on one side there-of means for main-` yname to this application.

JOHN HoDwiLLniMs, 

